Significance Mode Analysis (SigMA) for hierarchical structures. An application to the Sco-Cen OB association

Sebastian Ratzenböck, Josefa E. Großschedl, Torsten Möller +3

We present a new clustering method, Significance Mode Analysis (SigMA), to extract co-spatial and co-moving stellar populations from large-scale surveys such as ESA Gaia. The metho…